The 22-year-old exploded on to the international stage in October, netting on his England debut against Montenegro before helping overcome Poland as Roy Hodgson's men secured a place in Brazil.
However, Townsend has not enjoyed the best end to the campaign and last started a Premier League match in the 1-0 defeat to Arsenal on March 16.
That lack of game time has seen his World Cup hopes weaken and, worse still, the winger sustained an ankle injury after coming on 12 minutes from time in Saturday's 1-0 win at Stoke.
Townsend left the Britannia Stadium in a protective boot and underwent an MRI scan on Monday, with further assessments set for Tuesday.
The Spurs academy graduate has made 33 appearances in all this term, having impressed on loan at QPR at the back end of last season.
Source : PA
Source: PA